/Engine/Source/Runtime/Datasmith/DatasmithCore/Public/DatasmithSceneFactory.h
Creates a MaterialExpression from the given type. Warning: This function's main purpose is to allow the creation of serialized material expressions. Creating and adding new expressions to a UEPbrMaterial should be done with theIDatasmithUEPbrMaterialElement::AddMaterialExpression()function.
static [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IDatasmithMaterialExpression](API\Runtime\DatasmithCore\IDatasmithMaterialExpression) > CreateMaterialExpression ( EDatasmithMaterialExpressionType MaterialExpression )